Time in Guangzhou vs Dumai
Guangzhou keeps CST (UTC+8) and Dumai keeps WIB (UTC+7) today. Dumai is 1 hour behind Guangzhou; the rows below read both clocks live.
The working day, side by side
Hours shaded in both rows are inside working hours in both cities: 09:00–17:00 in Dumai (10:00–18:00 your time).
| City | 00:00 in Guangzhou | 01:00 in Guangzhou | 02:00 in Guangzhou | 03:00 in Guangzhou | 04:00 in Guangzhou | 05:00 in Guangzhou | 06:00 in Guangzhou | 07:00 in Guangzhou | 08:00 in Guangzhou | 09:00 in Guangzhou | 10:00 in Guangzhou | 11:00 in Guangzhou | 12:00 in Guangzhou | 13:00 in Guangzhou | 14:00 in Guangzhou | 15:00 in Guangzhou | 16:00 in Guangzhou | 17:00 in Guangzhou | 18:00 in Guangzhou | 19:00 in Guangzhou | 20:00 in Guangzhou | 21:00 in Guangzhou | 22:00 in Guangzhou | 23:00 in Guangzhou |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Guangzhou—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Dumai—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
- Working hours
- Shoulder
- Night
- Overlap
Do more with Guangzhou and Dumai
Best hours to call
10:00 in Guangzhou
Inside working hours on both sides
09:00 in Dumai
11:00 in Guangzhou
Inside working hours on both sides
10:00 in Dumai
12:00 in Guangzhou
Inside working hours on both sides
11:00 in Dumai
13:00 in Guangzhou
Inside working hours on both sides
12:00 in Dumai
Where daylight saving pulls them apart
Neither Guangzhou nor Dumai changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Dumai of Guangzhou?
Dumai is 1 hour behind Guangzhou right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Guangzhou and Dumai?
Any hour in 10:00–18:00 Guangzhou time is inside working hours in both cities.
Do Guangzhou and Dumai change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.